Merge pull request #31174 from tengqm/zh-cascading
[zh] Translate cascading deletion task
This commit is contained in:
Kubernetes Prow Robot
GitHub
commit
d2f7d7a2ed
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---
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title: 在集群中使用级联删除
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content_type: task
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---
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<!--
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title: Use Cascading Deletion in a Cluster
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content_type: task
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-->
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<!--overview-->
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<!--
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This page shows you how to specify the type of [cascading deletion](/docs/concepts/workloads/controllers/garbage-collection/#cascading-deletion)
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to use in your cluster during {{<glossary_tooltip text="garbage collection" term_id="garbage-collection">}}.
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-->
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本页面向你展示如何设置在你的集群执行{{<glossary_tooltip text="垃圾收集" term_id="garbage-collection">}}
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时要使用的[级联删除](/zh/docs/concepts/workloads/controllers/garbage-collection/#cascading-deletion)
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类型。
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## {{% heading "prerequisites" %}}
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{{< include "task-tutorial-prereqs.md" >}}
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<!--
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You also need to [create a sample Deployment](/docs/tasks/run-application/run-stateless-application-deployment/#creating-and-exploring-an-nginx-deployment)
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to experiment with the different types of cascading deletion. You will need to
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recreate the Deployment for each type.
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-->
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你还需要[创建一个 Deployment 示例](/zh/docs/tasks/run-application/run-stateless-application-deployment/#creating-and-exploring-an-nginx-deployment)
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以试验不同类型的级联删除。你需要为每种级联删除类型来重建 Deployment。
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<!--
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## Check owner references on your pods
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Check that the `ownerReferences` field is present on your pods:
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-->
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## 检查 Pod 上的属主引用 {#check-owner-references-on-your-pods}
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检查确认你的 Pods 上存在 `ownerReferences` 字段：
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```shell
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kubectl get pods -l app=nginx --output=yaml
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```
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<!--
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The output has an `ownerReferences` field similar to this:
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-->
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输出中包含 `ownerReferences` 字段，类似这样：
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```yaml
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apiVersion: v1
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...
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ownerReferences:
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- apiVersion: apps/v1
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blockOwnerDeletion: true
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controller: true
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kind: ReplicaSet
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name: nginx-deployment-6b474476c4
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uid: 4fdcd81c-bd5d-41f7-97af-3a3b759af9a7
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...
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```
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<!--
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## Use foreground cascading deletion {#use-foreground-cascading-deletion}
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By default, Kubernetes uses [background cascading deletion](/docs/concepts/workloads/controllers/garbage-collection/#background-deletion)
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to delete dependents of an object. You can switch to foreground cascading deletion
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using either `kubectl` or the Kubernetes API, depending on the Kubernetes
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version your cluster runs. {{<version-check>}}
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-->
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## 使用前台级联删除 {#use-foreground-cascading-deletion}
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默认情况下，Kubernetes 使用[后台级联删除](/zh/docs/concepts/workloads/controllers/garbage-collection/#background-deletion)
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以删除依赖某对象的其他对象。取决于你的集群所运行的 Kubernetes 版本，
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你可以使用 `kubectl` 或者 Kubernetes API 来切换到前台级联删除。
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{{<version-check>}}
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{{<tabs name="foreground_deletion">}}
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{{% tab name="Kubernetes 1.20.x 及更新版本" %}}
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<!--
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You can delete objects using foreground cascading deletion using `kubectl` or the
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Kubernetes API.
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-->
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你可以使用 `kubectl` 或者 Kubernetes API 来基于前台级联删除来删除对象。
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<!--
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**Using kubectl**
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Run the following command:
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-->
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**使用 kubectl**
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运行下面的命令：
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<!--TODO: verify release after which the --cascade flag is switched to a string in https://github.com/kubernetes/kubectl/commit/fd930e3995957b0093ecc4b9fd8b0525d94d3b4e-->
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```shell
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kubectl delete deployment nginx-deployment --cascade=foreground
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```
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<!--
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**Using the Kubernetes API**
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-->
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**使用 Kubernetes API**
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<!--
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1. Start a local proxy session:
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-->
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1. 启动一个本地代理会话：
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```shell
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kubectl proxy --port=8080
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```
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<!--
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1. Use `curl` to trigger deletion:
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-->
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2. 使用 `curl` 来触发删除操作：
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```shell
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curl -X DELETE localhost:8080/apis/apps/v1/namespaces/default/deployments/nginx-deployment \
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-d '{"kind":"DeleteOptions","apiVersion":"v1","propagationPolicy":"Foreground"}' \
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-H "Content-Type: application/json"
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```
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<!--
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The output contains a `foregroundDeletion` {{<glossary_tooltip text="finalizer" term_id="finalizer">}}
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like this:
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-->
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输出中包含 `foregroundDeletion` {{<glossary_tooltip text="finalizer" term_id="finalizer">}}，
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类似这样：
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```
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"kind": "Deployment",
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"apiVersion": "apps/v1",
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"metadata": {
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"name": "nginx-deployment",
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"namespace": "default",
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"uid": "d1ce1b02-cae8-4288-8a53-30e84d8fa505",
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"resourceVersion": "1363097",
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"creationTimestamp": "2021-07-08T20:24:37Z",
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"deletionTimestamp": "2021-07-08T20:27:39Z",
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"finalizers": [
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"foregroundDeletion"
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]
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...
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```
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{{% /tab %}}
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{{% tab name="Kubernetes 1.20.x 之前的版本" %}}
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<!--
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You can delete objects using foreground cascading deletion by calling the
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Kubernetes API.
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For details, read the [documentation for your Kubernetes version](/docs/home/supported-doc-versions/).
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-->
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你可以通过调用 Kubernetes API 来基于前台级联删除模式删除对象。
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进一步的细节，可阅读[特定于你的 Kubernetes 版本的文档](/zh/docs/home/supported-doc-versions)。
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<!--
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1. Start a local proxy session:
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-->
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1. 启动一个本地代理会话：
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```shell
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kubectl proxy --port=8080
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```
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<!--
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1. Use `curl` to trigger deletion:
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-->
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2. 使用 `curl` 来触发删除操作：
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```shell
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curl -X DELETE localhost:8080/apis/apps/v1/namespaces/default/deployments/nginx-deployment \
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-d '{"kind":"DeleteOptions","apiVersion":"v1","propagationPolicy":"Foreground"}' \
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-H "Content-Type: application/json"
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```
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<!--
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The output contains a `foregroundDeletion` {{<glossary_tooltip text="finalizer" term_id="finalizer">}}
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like this:
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-->
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输出中包含 `foregroundDeletion` {{<glossary_tooltip text="finalizer" term_id="finalizer">}}，
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类似这样：
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```none
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"kind": "Deployment",
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"apiVersion": "apps/v1",
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"metadata": {
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"name": "nginx-deployment",
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"namespace": "default",
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"uid": "d1ce1b02-cae8-4288-8a53-30e84d8fa505",
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"resourceVersion": "1363097",
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"creationTimestamp": "2021-07-08T20:24:37Z",
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"deletionTimestamp": "2021-07-08T20:27:39Z",
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"finalizers": [
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"foregroundDeletion"
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]
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...
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```
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{{% /tab %}}
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{{</tabs>}}
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<!--
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## Use background cascading deletion {#use-background-cascading-deletion}
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-->
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## 使用后台级联删除 {#use-background-cascading-deletion}
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||||||
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<!--
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1. [Create a sample Deployment](/docs/tasks/run-application/run-stateless-application-deployment/#creating-and-exploring-an-nginx-deployment).
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1. Use either `kubectl` or the Kubernetes API to delete the Deployment,
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|
depending on the Kubernetes version your cluster runs. {{<version-check>}}
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-->
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1. [创建一个 Deployment 示例](zh/docs/tasks/run-application/run-stateless-application-deployment/#creating-and-exploring-an-nginx-deployment)。
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1. 基于你的集群所运行的 Kubernetes 版本，使用 `kubectl` 或者 Kubernetes API 来删除 Deployment。
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{{<version-check>}}
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{{<tabs name="background_deletion">}}
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{{% tab name="Kubernetes 1.20.x 及更新版本" %}}
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<!--
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||||||
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You can delete objects using background cascading deletion using `kubectl`
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or the Kubernetes API.
|
||||||
|
|
||||||
|
Kubernetes uses background cascading deletion by default, and does so
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even if you run the following commands without the `--cascade` flag or the
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`propagationPolicy` argument.
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-->
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你可以使用 `kubectl` 或者 Kubernetes API 来执行后台级联删除方式的对象删除操作。
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Kubernetes 默认采用后台级联删除方式，如果你在运行下面的命令时不指定
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`--cascade` 标志或者 `propagationPolicy` 参数时，用这种方式来删除对象。
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<!--
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**Using kubectl**
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Run the following command:
|
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-->
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**使用 kubectl**
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运行下面的命令：
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```shell
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kubectl delete deployment nginx-deployment --cascade=background
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```
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|
<!--
|
||||||
|
**Using the Kubernetes API**
|
||||||
|
-->
|
||||||
|
**使用 Kubernetes API**
|
||||||
|
|
||||||
|
<!--
|
||||||
|
1. Start a local proxy session:
|
||||||
|
-->
|
||||||
|
1. 启动一个本地代理会话：
|
||||||
|
|
||||||
|
```shell
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|
kubectl proxy --port=8080
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|
```
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||||||
|
|
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|
<!--
|
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|
1. Use `curl` to trigger deletion:
|
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|
-->
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||||||
|
2. 使用 `curl` 来触发删除操作：
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|
```shell
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curl -X DELETE localhost:8080/apis/apps/v1/namespaces/default/deployments/nginx-deployment \
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-d '{"kind":"DeleteOptions","apiVersion":"v1","propagationPolicy":"Background"}' \
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-H "Content-Type: application/json"
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```
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<!--
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The output is similar to this:
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-->
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输出类似于：
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||||||
|
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```
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"kind": "Status",
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"apiVersion": "v1",
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|
...
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"status": "Success",
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"details": {
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"name": "nginx-deployment",
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"group": "apps",
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"kind": "deployments",
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"uid": "cc9eefb9-2d49-4445-b1c1-d261c9396456"
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}
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|
```
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|
{{% /tab %}}
|
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|
{{% tab name="Kubernetes 1.20.x 之前的版本" %}}
|
||||||
|
|
||||||
|
<!--
|
||||||
|
Kubernetes uses background cascading deletion by default, and does so
|
||||||
|
even if you run the following commands without the `--cascade` flag or the
|
||||||
|
`propagationPolicy: Background` argument.
|
||||||
|
-->
|
||||||
|
Kubernetes 默认采用后台级联删除方式，如果你在运行下面的命令时不指定
|
||||||
|
`--cascade` 标志或者 `propagationPolicy` 参数时，用这种方式来删除对象。
|
||||||
|
|
||||||
|
<!--
|
||||||
|
For details, read the [documentation for your Kubernetes version](/docs/home/supported-doc-versions/).
|
||||||
|
-->
|
||||||
|
进一步的细节，可阅读[特定于你的 Kubernetes 版本的文档](/zh/docs/home/supported-doc-versions)。
|
||||||
|
|
||||||
|
<!--
|
||||||
|
**Using kubectl**
|
||||||
|
|
||||||
|
Run the following command:
|
||||||
|
-->
|
||||||
|
**使用 kubectl**
|
||||||
|
|
||||||
|
运行下面的命令：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
kubectl delete deployment nginx-deployment --cascade=true
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
**Using the Kubernetes API**
|
||||||
|
-->
|
||||||
|
**使用 Kubernetes API**
|
||||||
|
|
||||||
|
<!--
|
||||||
|
1. Start a local proxy session:
|
||||||
|
-->
|
||||||
|
1. 启动一个本地代理会话：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
kubectl proxy --port=8080
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
1. Use `curl` to trigger deletion:
|
||||||
|
-->
|
||||||
|
2. 使用 `curl` 来触发删除操作：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
curl -X DELETE localhost:8080/apis/apps/v1/namespaces/default/deployments/nginx-deployment \
|
||||||
|
-d '{"kind":"DeleteOptions","apiVersion":"v1","propagationPolicy":"Background"}' \
|
||||||
|
-H "Content-Type: application/json"
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
The output is similar to this:
|
||||||
|
-->
|
||||||
|
输出类似于：
|
||||||
|
|
||||||
|
```
|
||||||
|
"kind": "Status",
|
||||||
|
"apiVersion": "v1",
|
||||||
|
...
|
||||||
|
"status": "Success",
|
||||||
|
"details": {
|
||||||
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"name": "nginx-deployment",
|
||||||
|
"group": "apps",
|
||||||
|
"kind": "deployments",
|
||||||
|
"uid": "cc9eefb9-2d49-4445-b1c1-d261c9396456"
|
||||||
|
}
|
||||||
|
```
|
||||||
|
{{% /tab %}}
|
||||||
|
{{</tabs>}}
|
||||||
|
|
||||||
|
<!--
|
||||||
|
## Delete owner objects and orphan dependents {#set-orphan-deletion-policy}
|
||||||
|
|
||||||
|
By default, when you tell Kubernetes to delete an object, the
|
||||||
|
{{<glossary_tooltip text="controller" term_id="controller">}} also deletes
|
||||||
|
dependent objects. You can make Kubernetes *orphan* these dependents using
|
||||||
|
`kubectl` or the Kubernetes API, depending on the Kubernetes version your
|
||||||
|
cluster runs. {{<version-check>}}
|
||||||
|
-->
|
||||||
|
## 删除属主对象和孤立的依赖对象 {#set-orphan-deletion-policy}
|
||||||
|
|
||||||
|
默认情况下，当你告诉 Kubernetes 删除某个对象时，
|
||||||
|
{{<glossary_tooltip text="控制器" term_id="controller">}} 也会删除依赖该对象
|
||||||
|
的其他对象。
|
||||||
|
取决于你的集群所运行的 Kubernetes 版本，你也可以使用 `kubectl` 或者 Kubernetes
|
||||||
|
API 来让 Kubernetes *孤立* 这些依赖对象。{{<version-check>}}
|
||||||
|
|
||||||
|
{{<tabs name="orphan_objects">}}
|
||||||
|
{{% tab name="Kubernetes 1.20.x 及更新版本" %}}
|
||||||
|
|
||||||
|
<!--
|
||||||
|
**Using kubectl**
|
||||||
|
|
||||||
|
Run the following command:
|
||||||
|
-->
|
||||||
|
**使用 kubectl**
|
||||||
|
|
||||||
|
运行下面的命令：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
kubectl delete deployment nginx-deployment --cascade=orphan
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
**Using the Kubernetes API**
|
||||||
|
-->
|
||||||
|
**使用 Kubernetes API**
|
||||||
|
|
||||||
|
<!--
|
||||||
|
1. Start a local proxy session:
|
||||||
|
-->
|
||||||
|
1. 启动一个本地代理会话：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
kubectl proxy --port=8080
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
1. Use `curl` to trigger deletion:
|
||||||
|
-->
|
||||||
|
2. 使用 `curl` 来触发删除操作：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
curl -X DELETE localhost:8080/apis/apps/v1/namespaces/default/deployments/nginx-deployment \
|
||||||
|
-d '{"kind":"DeleteOptions","apiVersion":"v1","propagationPolicy":"Orphan"}' \
|
||||||
|
-H "Content-Type: application/json"
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
The output contains `orphan` in the `finalizers` field, similar to this:
|
||||||
|
-->
|
||||||
|
输出中在 `finalizers` 字段中包含 `orphan`，如下所示：
|
||||||
|
|
||||||
|
```
|
||||||
|
"kind": "Deployment",
|
||||||
|
"apiVersion": "apps/v1",
|
||||||
|
"namespace": "default",
|
||||||
|
"uid": "6f577034-42a0-479d-be21-78018c466f1f",
|
||||||
|
"creationTimestamp": "2021-07-09T16:46:37Z",
|
||||||
|
"deletionTimestamp": "2021-07-09T16:47:08Z",
|
||||||
|
"deletionGracePeriodSeconds": 0,
|
||||||
|
"finalizers": [
|
||||||
|
"orphan"
|
||||||
|
],
|
||||||
|
...
|
||||||
|
```
|
||||||
|
|
||||||
|
{{% /tab %}}
|
||||||
|
{{% tab name="Kubernetes 1.20.x 之前的版本" %}}
|
||||||
|
|
||||||
|
<!--
|
||||||
|
For details, read the [documentation for your Kubernetes version](/docs/home/supported-doc-versions/).
|
||||||
|
-->
|
||||||
|
进一步的细节，可阅读[特定于你的 Kubernetes 版本的文档](/zh/docs/home/supported-doc-versions)。
|
||||||
|
|
||||||
|
<!--
|
||||||
|
**Using kubectl**
|
||||||
|
|
||||||
|
Run the following command:
|
||||||
|
-->
|
||||||
|
**使用 kubectl**
|
||||||
|
|
||||||
|
运行下面的命令：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
kubectl delete deployment nginx-deployment --cascade=orphan
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
**Using the Kubernetes API**
|
||||||
|
-->
|
||||||
|
**使用 Kubernetes API**
|
||||||
|
|
||||||
|
<!--
|
||||||
|
1. Start a local proxy session:
|
||||||
|
-->
|
||||||
|
1. 启动一个本地代理会话：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
kubectl proxy --port=8080
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
1. Use `curl` to trigger deletion:
|
||||||
|
-->
|
||||||
|
2. 使用 `curl` 来触发删除操作：
|
||||||
|
|
||||||
|
|
||||||
|
```shell
|
||||||
|
curl -X DELETE localhost:8080/apis/apps/v1/namespaces/default/deployments/nginx-deployment \
|
||||||
|
-d '{"kind":"DeleteOptions","apiVersion":"v1","propagationPolicy":"Orphan"}' \
|
||||||
|
-H "Content-Type: application/json"
|
||||||
|
```
|
||||||
|
|
||||||
|
<!--
|
||||||
|
The output contains `orphan` in the `finalizers` field, similar to this:
|
||||||
|
-->
|
||||||
|
输出中在 `finalizers` 字段中包含 `orphan`，如下所示：
|
||||||
|
|
||||||
|
```
|
||||||
|
"kind": "Deployment",
|
||||||
|
"apiVersion": "apps/v1",
|
||||||
|
"namespace": "default",
|
||||||
|
"uid": "6f577034-42a0-479d-be21-78018c466f1f",
|
||||||
|
"creationTimestamp": "2021-07-09T16:46:37Z",
|
||||||
|
"deletionTimestamp": "2021-07-09T16:47:08Z",
|
||||||
|
"deletionGracePeriodSeconds": 0,
|
||||||
|
"finalizers": [
|
||||||
|
"orphan"
|
||||||
|
],
|
||||||
|
...
|
||||||
|
```
|
||||||
|
{{% /tab %}}
|
||||||
|
{{</tabs>}}
|
||||||
|
|
||||||
|
<!--
|
||||||
|
You can check that the Pods managed by the Deployment are still running:
|
||||||
|
-->
|
||||||
|
你可以检查 Deployment 所管理的 Pods 仍然处于运行状态：
|
||||||
|
|
||||||
|
```shell
|
||||||
|
kubectl get pods -l app=nginx
|
||||||
|
```
|
||||||
|
|
||||||
|
## {{% heading "whatsnext" %}}
|
||||||
|
|
||||||
|
<!--
|
||||||
|
* Learn about [owners and dependents](/docs/concepts/overview/working-with-objects/owners-dependents/) in Kubernetes.
|
||||||
|
* Learn about Kubernetes [finalizers](/docs/concepts/overview/working-with-objects/finalizers/).
|
||||||
|
* Learn about [garbage collection](/docs/concepts/workloads/controllers/garbage-collection/).
|
||||||
|
-->
|
||||||
|
* 了解 Kubernetes 中的[属主与依赖](/zh/docs/concepts/overview/working-with-objects/owners-dependents/)
|
||||||
|
* 了解 Kubernetes [finalizers](/zh/docs/concepts/overview/working-with-objects/finalizers/)
|
||||||
|
* 了解[垃圾收集](/zh/docs/concepts/workloads/controllers/garbage-collection/).
|
||||||
|
|
||||||
Loading…
Reference in New Issue